derek.holloway
7502bf64a4
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115 lines
2.8 KiB
LLVM
115 lines
2.8 KiB
LLVM
; RUN: opt -passes=inline -inline-threshold=0 -inline-all-viable-calls -S < %s | FileCheck %s
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; Check that viable calls that are beyond the cost threshold are still inlined.
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define i32 @callee_simple(i32 %x) {
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%1 = add i32 %x, 1
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%2 = mul i32 %1, 2
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%3 = sub i32 %2, 1
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%4 = add i32 %3, 3
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%5 = mul i32 %4, 2
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%6 = sub i32 %5, 2
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%7 = add i32 %6, 1
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ret i32 %7
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}
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; Check that user decisions are respected.
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define i32 @callee_alwaysinline(i32 %x) alwaysinline {
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%sub = sub i32 %x, 3
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ret i32 %sub
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}
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define i32 @callee_noinline(i32 %x) noinline {
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%div = sdiv i32 %x, 2
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ret i32 %div
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}
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define i32 @callee_optnone(i32 %x) optnone noinline {
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%rem = srem i32 %x, 2
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ret i32 %rem
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}
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define i32 @caller(i32 %a) {
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; CHECK-LABEL: define i32 @caller(
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; CHECK-SAME: i32 [[A:%.*]]) {
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; CHECK-NEXT: [[TMP7:%.*]] = add i32 [[A]], 1
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; CHECK-NEXT: [[TMP8:%.*]] = mul i32 [[TMP7]], 2
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; CHECK-NEXT: [[TMP3:%.*]] = sub i32 [[TMP8]], 1
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; CHECK-NEXT: [[TMP4:%.*]] = add i32 [[TMP3]], 3
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; CHECK-NEXT: [[TMP5:%.*]] = mul i32 [[TMP4]], 2
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; CHECK-NEXT: [[TMP6:%.*]] = sub i32 [[TMP5]], 2
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; CHECK-NEXT: [[ADD_I:%.*]] = add i32 [[TMP6]], 1
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; CHECK-NEXT: [[SUB_I:%.*]] = sub i32 [[ADD_I]], 3
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; CHECK-NEXT: [[TMP1:%.*]] = call i32 @callee_noinline(i32 [[SUB_I]])
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; CHECK-NEXT: [[TMP2:%.*]] = call i32 @callee_optnone(i32 [[TMP1]])
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; CHECK-NEXT: [[SUM:%.*]] = add i32 [[TMP2]], [[TMP1]]
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; CHECK-NEXT: ret i32 [[SUM]]
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;
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%1 = call i32 @callee_simple(i32 %a)
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%2 = call i32 @callee_alwaysinline(i32 %1)
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%3 = call i32 @callee_noinline(i32 %2)
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%4 = call i32 @callee_optnone(i32 %3)
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%sum = add i32 %4, %3
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ret i32 %sum
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}
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; Check that non-viable calls are not inlined
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; Test recursive function is not inlined
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define i32 @recursive(i32 %n) {
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entry:
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%cmp = icmp eq i32 %n, 0
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br i1 %cmp, label %base, label %recurse
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base:
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ret i32 0
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recurse:
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%dec = sub i32 %n, 1
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%rec = call i32 @recursive(i32 %dec)
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%add = add i32 %rec, 1
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ret i32 %add
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}
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define i32 @call_recursive(i32 %x) {
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; CHECK-LABEL: define i32 @call_recursive(
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; CHECK-SAME: i32 [[X:%.*]]) {
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; CHECK-NEXT: [[R:%.*]] = call i32 @recursive(i32 [[X]])
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; CHECK-NEXT: ret i32 [[R]]
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;
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%r = call i32 @recursive(i32 %x)
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ret i32 %r
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}
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; Test indirectbr prevents inlining
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define void @has_indirectbr(ptr %ptr, i32 %cond) {
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entry:
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switch i32 %cond, label %default [
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i32 0, label %target0
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i32 1, label %target1
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]
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target0:
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br label %end
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target1:
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br label %end
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default:
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br label %end
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end:
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indirectbr ptr %ptr, [label %target0, label %target1]
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ret void
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}
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define void @call_indirectbr(ptr %p, i32 %c) {
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; CHECK-LABEL: define void @call_indirectbr(
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; CHECK-SAME: ptr [[P:%.*]], i32 [[C:%.*]]) {
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; CHECK-NEXT: call void @has_indirectbr(ptr [[P]], i32 [[C]])
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; CHECK-NEXT: ret void
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;
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call void @has_indirectbr(ptr %p, i32 %c)
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ret void
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}
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